On minimal ω-composition non-H-formations

• Published in: Algebra and Discrete Mathematics
• Date: 2006
• ISSN: 1726-3255
• Main Authors: Belous, L.I., Selkin, V.M.
• Format: Article
• Language: English
• Published: Інститут прикладної математики і механіки НАН України 2006
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/157390
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: On minimal ω-composition non-H-formations / L.I. Belous, V.M. Selkin // Algebra and Discrete Mathematics. — 2006. — Vol. 5, № 4. — С. 1–11. — Бібліогр.: 12 назв. — англ.

Let H be some class of groups. A formation F
 is called a minimal τ -closed ω-composition non-H-formation [1] if
 F * H but F1 ⊆ H for all proper τ -closed ω-composition subformations F₁ of F. In this paper we describe the minimal τ -closed
 ω-composition non-H-formations, wh...